| | 1 | Author
| M. Grottel, A. Kozak, Z. Pająk | Requires cookie* | | | Title
| *H and 19 F NMR Study of Cation and Anion Motions in Guanidinium Hexafluorozirconate  | | | | Abstract
| Proton and fluorine NMR second moments and spin-lattice relaxation times of polycrystalline guanidinium hexafluorozirconate and its deuterated analogue were studied in laboratory (60 MHz) and rotating (H, = 20 G) frames over a wide range of temperature. An analysis of the experimental results enabled us to reveal a dynamical inequivalence of two crystallographically independent cations and an unexpected high mobility of nonspherical anion dimers. A comparison of the ions dynamics in 2:1 complex studied with the guanidinium 1:1 and 3:1 complexes has shown a significant contribution of the hydrogen bonds to the potential barriers hindering the anion reorien-tations. At low temperatures a proton motion in the hydrogen bond and at 400 K a solid-solid phase transition have been discerned. | | | |
Reference
| Z. Naturforsch. 51a, 991—996 (1996); received May 14 1996 | | | |
Published
| 1996 | | | |
Keywords
| NMR, Ion Motions, Hydrogen Bonds, Phase Transitions | | | |
Similar Items
| Find | | | DEBUG INFO
| | | | | TEI-XML for
| default:Reihe_A/51/ZNA-1996-51a-0991.pdf | | | | Identifier
| ZNA-1996-51a-0991 | | | | Volume
| 51 | |
|
